Joint Adaptive Modulation and Combining for Hybrid FSO/RF Systems
Type
Conference PaperKAUST Department
Computer, Electrical and Mathematical Sciences and Engineering (CEMSE) DivisionElectrical Engineering Program
Date
2015-11-12Online Publication Date
2015-11-12Print Publication Date
2015-10Permanent link to this record
http://hdl.handle.net/10754/621253
Metadata
Show full item recordAbstract
In this paper, we present and analyze a new transmission scheme for hybrid FSO/RF communication system based on joint adaptive modulation and adaptive combining. Specifically, the data rate on the FSO link is adjusted in discrete manner according to the FSO link's instantaneous received signal-to-noise-ratio (SNR). If the FSO link's quality is too poor to maintain the target bit-error-rate, the system activates the RF link along with the FSO link. When the RF link is activated, simultaneous transmission of the same modulated data takes place on both links, where the received signals from both links are combined using maximal ratio combining scheme. In this case, the data rate of the system is adjusted according to the instantaneous combined SNRs. Novel analytical expression for the cumulative distribution function (CDF) of the received SNR for the proposed adaptive hybrid system is obtained. This CDF expression is used to study the spectral and outage performances of the proposed adaptive hybrid FSO/RF system. Numerical examples are presented to compare the performance of the proposed adaptive hybrid FSO/RF system with that of switch-over hybrid FSO/RF and FSO-only systems employing the same adaptive modulation schemes. © 2015 IEEE.Citation
Rakia T, Yang H-C, Gebali F, Alouini M-S (2015) Joint Adaptive Modulation and Combining for Hybrid FSO/RF Systems. 2015 IEEE International Conference on Ubiquitous Wireless Broadband (ICUWB). Available: http://dx.doi.org/10.1109/ICUWB.2015.7324467.Conference/Event name
IEEE International Conference on Ubiquitous Wireless Broadband, ICUWB 2015Additional Links
http://ieeexplore.ieee.org/document/7324467ae974a485f413a2113503eed53cd6c53
10.1109/ICUWB.2015.7324467